21369495

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{4733}}^1$

素因数の和:4791

約数の個数: 32

約数和(自身を含む): 39992832

約数和(自身を除く): 18623337

約数列:

[1, 3, 5, 7, 15, 21, 35, 43, 105, 129, 215, 301, 645, 903, 1505, 4515, 4733, 14199, 23665, 33131, 70995, 99393, 165655, 203519, 496965, 610557, 1017595, 1424633, 3052785, 4273899, 7123165, 21369495]

約数ペア:

[(1, 21369495), (3, 7123165), (5, 4273899), (7, 3052785), (15, 1424633), (21, 1017595), (35, 610557), (43, 496965), (105, 203519), (129, 165655), (215, 99393), (301, 70995), (645, 33131), (903, 23665), (1505, 14199), (4515, 4733)]